How many letters does the top answer for “having or using only one filament” have?

The most common answer is unifilar (8 letters).

Crossword clue: having or using only one filament

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

unifilar 8 letters wn-def

having or using only one filament

having only one leaf. 50% similar → unifolliate

having only one nucleus 50% similar → mononuclear, mononucleate

having only one seed. 50% similar → monospermal, monospermous

having or using two filaments 50% similar → bifilar